1 /* $NetBSD: csa.c,v 1.12 2014/03/21 16:43:00 christos Exp $ */
2
3 /*
4 * Copyright (c) 1998 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Mark Brinicombe of Causality Limited.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 /*
33 * Cumana SCSI 1 driver using the generic NCR5380 driver
34 */
35
36 #include <sys/cdefs.h>
37 __KERNEL_RCSID(0, "$NetBSD: csa.c,v 1.12 2014/03/21 16:43:00 christos Exp $");
38
39 #include <sys/param.h>
40 #include <sys/systm.h>
41 #include <sys/kernel.h>
42 #include <sys/device.h>
43 #include <sys/buf.h>
44 #include <dev/scsipi/scsi_all.h>
45 #include <dev/scsipi/scsipi_all.h>
46 #include <dev/scsipi/scsiconf.h>
47
48 #include <dev/ic/ncr5380reg.h>
49 #include <dev/ic/ncr5380var.h>
50
51 #include <machine/io.h>
52 #include <machine/intr.h>
53 #include <machine/bootconfig.h>
54
55 #include <acorn32/podulebus/podulebus.h>
56 #include <dev/podulebus/podules.h>
57 #include <dev/podulebus/powerromreg.h>
58
59 #define CSA_NCR5380_OFFSET 0x2100
60 #define CSA_CTRL_OFFSET 0x2000 - 2308
61 #define CSA_DIRWRITE 0x02
62 #define CSA_DIRREAD 0x00
63 #define CSA_16BITS 0x00
64 #define CSA_8BITS 0x10
65 #define CSA_XXX 0x40
66 #define CSA_DATA_OFFSET 0x2000
67 #define CSA_INTR_OFFSET 0x2000
68 #define CSA_INTR_MASK 0x80
69 #define CSA_STAT_OFFSET 0x2004
70 #define CSA_STAT_DRQ 0x40
71 #define CSA_STAT_END 0x80
72
73 int csa_match(device_t, cfdata_t, void *);
74 void csa_attach(device_t, device_t, void *);
75
76 /*
77 * Cumana SCSI 1 softc structure.
78 *
79 * Contains the generic ncr5380 device node,
80 * podule information and global information
81 * required by the driver.
82 */
83
84 struct csa_softc {
85 struct ncr5380_softc sc_ncr5380;
86 void *sc_ih;
87 struct evcnt sc_intrcnt;
88 int sc_podule_number;
89 podule_t *sc_podule;
90 volatile uint8_t *sc_irqstatus;
91 uint8_t sc_irqmask;
92 volatile uint8_t *sc_ctrl;
93 volatile uint8_t *sc_status;
94 volatile uint8_t *sc_data;
95 };
96
97 CFATTACH_DECL_NEW(csa, sizeof(struct csa_softc),
98 csa_match, csa_attach, NULL, NULL);
99
100 int csa_intr(void *arg);
101
102 /*
103 * Card probe function
104 *
105 * Just match the manufacturer and podule ID's
106 */
107
108 int
csa_match(device_t parent,cfdata_t cf,void * aux)109 csa_match(device_t parent, cfdata_t cf, void *aux)
110 {
111 struct podule_attach_args *pa = aux;
112
113 if (pa->pa_product == PODULE_CUMANA_SCSI1)
114 return 1;
115
116 /* PowerROM */
117 if (pa->pa_product == PODULE_ALSYSTEMS_SCSI &&
118 podulebus_initloader(pa) == 0 &&
119 (podloader_callloader(pa, 0, 0) == PRID_CUMANA_SCSI1_8 ||
120 podloader_callloader(pa, 0, 0) == PRID_CUMANA_SCSI1_16))
121 return 1;
122
123 return 0;
124 }
125
126 /*
127 * Card attach function
128 *
129 */
130
131 void
csa_attach(device_t parent,device_t self,void * aux)132 csa_attach(device_t parent, device_t self, void *aux)
133 {
134 struct csa_softc *sc = device_private(self);
135 struct ncr5380_softc *ncr_sc = &sc->sc_ncr5380;
136 struct podule_attach_args *pa = aux;
137 uint8_t *iobase;
138 char hi_option[sizeof(device_xname(self)) + 8];
139
140 ncr_sc->sc_dev = self;
141
142 /* Note the podule number and validate */
143
144 if (pa->pa_podule_number == -1)
145 panic("Podule has disappeared !");
146
147 sc->sc_podule_number = pa->pa_podule_number;
148 sc->sc_podule = pa->pa_podule;
149 podules[sc->sc_podule_number].attached = 1;
150
151 ncr_sc->sc_flags |= NCR5380_FORCE_POLLING;
152 ncr_sc->sc_min_dma_len = 0;
153 ncr_sc->sc_no_disconnect = 0x00;
154 ncr_sc->sc_parity_disable = 0x00;
155
156 ncr_sc->sc_dma_alloc = NULL;
157 ncr_sc->sc_dma_free = NULL;
158 ncr_sc->sc_dma_poll = NULL;
159 ncr_sc->sc_dma_setup = NULL;
160 ncr_sc->sc_dma_start = NULL;
161 ncr_sc->sc_dma_eop = NULL;
162 ncr_sc->sc_dma_stop = NULL;
163 ncr_sc->sc_intr_on = NULL;
164 ncr_sc->sc_intr_off = NULL;
165
166 iobase = (uint8_t *)pa->pa_podule->slow_base + CSA_NCR5380_OFFSET;
167 ncr_sc->sci_r0 = iobase + 0;
168 ncr_sc->sci_r1 = iobase + 4;
169 ncr_sc->sci_r2 = iobase + 8;
170 ncr_sc->sci_r3 = iobase + 12;
171 ncr_sc->sci_r4 = iobase + 16;
172 ncr_sc->sci_r5 = iobase + 20;
173 ncr_sc->sci_r6 = iobase + 24;
174 ncr_sc->sci_r7 = iobase + 28;
175
176 ncr_sc->sc_rev = NCR_VARIANT_NCR5380;
177
178 sc->sc_ctrl = (uint8_t *)pa->pa_podule->slow_base + CSA_CTRL_OFFSET;
179 sc->sc_status = (uint8_t *)pa->pa_podule->slow_base + CSA_STAT_OFFSET;
180 sc->sc_data = (uint8_t *)pa->pa_podule->slow_base + CSA_DATA_OFFSET;
181
182 ncr_sc->sc_pio_in = ncr5380_pio_in;
183 ncr_sc->sc_pio_out = ncr5380_pio_out;
184
185 /* Provide an override for the host id */
186 ncr_sc->sc_channel.chan_id = 7;
187 snprintf(hi_option, sizeof(hi_option), "%s.hostid", device_xname(self));
188 (void)get_bootconf_option(boot_args, hi_option,
189 BOOTOPT_TYPE_INT, &ncr_sc->sc_channel.chan_id);
190 ncr_sc->sc_adapter.adapt_minphys = minphys;
191
192 aprint_normal(": host=%d, using 8 bit PIO",
193 ncr_sc->sc_channel.chan_id);
194
195 sc->sc_irqstatus =
196 (uint8_t *)pa->pa_podule->slow_base + CSA_INTR_OFFSET;
197 sc->sc_irqmask = CSA_INTR_MASK;
198
199 evcnt_attach_dynamic(&sc->sc_intrcnt, EVCNT_TYPE_INTR, NULL,
200 device_xname(self), "intr");
201 sc->sc_ih = podulebus_irq_establish(pa->pa_ih, IPL_BIO, csa_intr, sc,
202 &sc->sc_intrcnt);
203 if (sc->sc_ih == NULL)
204 ncr_sc->sc_flags |= NCR5380_FORCE_POLLING;
205
206 if (ncr_sc->sc_flags & NCR5380_FORCE_POLLING)
207 aprint_normal(", polling");
208 aprint_normal("\n");
209 *sc->sc_ctrl = 0;
210
211 ncr5380_attach(ncr_sc);
212 }
213
214 int
csa_intr(void * arg)215 csa_intr(void *arg)
216 {
217 struct csa_softc *sc = arg;
218
219 if ((*sc->sc_irqstatus) & sc->sc_irqmask)
220 (void)ncr5380_intr(&sc->sc_ncr5380);
221
222 return 0;
223 }
224